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I have a 328i Coupe on a R plate (1997) M52 I beleave if incorrected please let me now.

I have been told that there are six breathing modifications to be done. Can anyone help with them mods and more please.

If i change the inlet manifold with a bigger bore throttle body off a 325i this will give me approx 20hp and makes the car more responsive. Can anyone help out please.

Thanks
Rhys
 

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Welcome. You do have the M52.

You need to fit the earlier M50 2.5 manifold to your 2.8 M52 and it should give you about 15-20bhp. It should make a massive difference at higher revs.

The manifold is not a straight forward fit. You can either bodge it together yourself or buy a pre-converted one which should just bolt straight on.

Ian
 

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